SA 3 – Par Avion
SA 75th anniversary in Switzerland, various anniversaries.
Issued 05.03.1958
Postmark: Hilterfingen
Cachet: Par Avion – reg. cover
Stanley Gibbons 587 – 590 (SA stamps is no. 590)
Note: Private Airmail FDC.
SA 3 – Salvation Army FDCs Switzerland 1958